"position unknown"

[anthonyxritchie]

I have a skyview display that's fed a GPS signal from a Garmin GTN 650. I have about 15 hours with this this setup but just recently during a fuel stop when I started back up, the map page reads "position unknown." and has ever since (the rest of that flight and the next one, about 2+ flight hours). The GTN appears to be working normally and in the info for the the Dynon display it seems to show that its receiving a GPS position from the Garmin. Plus the Dynon ads-b transponder is using the same GPS source and is also working fine.

Any ideas why the map is unable to show the airplanes position on the map or what other troubleshooting steps to take?

 

[skysailor]

Take a look at the serial port where the position data comes from the Garmin. Make sure it is showing traffic on the port and no errors. Do you by chance have a Dynon GPS antenna (even the VFR only one)? If so check the assignment of the serial ports and make sure your Dynon shows POS1 for the port receiving the ADSB position data from the Garmin.

 

[anthonyxritchie]

Well this is interesting: I don’t have anything set up in the serial set up for position data. Port 5 has “dynon sv-gps-250” for “pos 1” (a device that I don’t have). the arinc-429 is set to receive nav 1 on input 2 and nothing on input 1.

I had a shop set this up so I’m not up to scratch on how this is supposed to work and seems weird if these internal settings would be working fine and then just stop during a fuel stop.

I do not have a second gps receiver.

 

[SV_Classic]

If it was already working I'd also suggest checking all of the connectors at each of the Dynon components.

Good luck with it